Answer:
0.67 m/s
Explanation:
The average velocity is the change in position over the change in time.
vₐ = (s − s₀) / (t − t₀)
In other words, it is the slope of the line connecting points E and F.
At point E, t₀ = 9 s and s₀ = 0 m.
At point F, t = 12 s and s = 2 m.
vₐ = (2 m − 0 m) / (12 s − 9 s)
vₐ = 0.67 m/s
